Step 1: Materials
-Half a 2x2
-4 wood screws
-Some leftover plexi-glass
A note on the fan. I already had the fan kicking around which is what kept this project free for me. If you don't have a fan already, try and find one that can run on 120V or whatever the voltage coming out of your wall is. This way you can avoid any additional costs needed to purchase or make a power supply, like you would need for a regular CPU fan that runs on 12V.
Step 2: The Build
I started with the wooden frame. Everything is simply screwed together at the corners.
Next, I cut the plexi to make space for the fan. The fan that I am using is a biscuit fan, and it has a 90' difference between the inlet and outlet, rather than your typical computer fan which is straight through. I needed to make sure that it had clearance because part of the rotor sticks out below the base of the frame. I epoxied the plexi in place and then, after it dried, mounted he fan with hot glue.
I sealed any cracks that air could escape through with hot glue, to make sure that all the air gets pushed past my laptop.
I added some risers made from plexi to the top to allow for more space for the air to move, and made little hot glue feet for the bottom. I later replaced the feet with some wider and shorter 3d printed ones, which I epoxied onto the bottom of the plexi.
Step 3: The Finished Product
Thanks for reading my instructable! Post in the comments if you decide to cobble together a laptop cooler of your own!